Heating-stove.



l No. 852.054. PATBNTED APR. '30, 1907. E. ELOFSON. HEATING STOVB.y

APPLICATION FILED JAN. 22. 1907.

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PATENTED APR. 30, 1907.

E. ELOFSON HEATING STOVE ArPLIoATIoN FILED mmm-1901.

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PATENTBD APR. 3o, 1907.

E. ELPsoN. HEATING STOVB.

APPLICATION FILED JAN. 22,1907.

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THE MORRIS PKYFRS C0., WASHINGTGN, DA C.

UNITED STATES PATENT @FFICEO HEATING-STOVE.

Specification of Letters Patent.

Patented April 30, 1907.

Application filed January ZZ, 1907. Serial No. 353,425.

To @ZZ when?, it muy concern.-

Be it known that I, ERIK ELoFsoN, a citizen of the United States, residing at Forest Lake, in the county of Iashington and State of Minnesota, have invented certain new and useful Improvements in IiIeating- Stoves g and I do hereby declare the followingl to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same.

My invention has for its object to provide an improved heating stove, andto this end it consists of the novel devices and combinations of devices hereinafter described and defined in the claims.

In the accompanying drawings which illustrate my invention, like characters indicate like parts throughout the several views.

Referring to the drawings, Figure l is a longitudinal vertical section taken 'through the central portion of the improved stove. Fig. 2 is a horizontal section taken on the line x2 :r2 of Fig. 1. Fig. 3 is a horizontal section taken on the line :r3 se" of Fig. l and Fig. il is a longitudinal vertical section taken on the irregular line r4 of Fig. 2.

The improved stove may be constructed entirely of sheet metal or entirely of cast iron, but is preferably made up of a combination of sheet metal and cast iron.

The stove comprises a hollow cast base e that is divided by vertical partitions al and a2 into three compartments a-3-7. The compartment a serves to hold an ash pan b, immediately above which is supported a grate c of the usual or any suitable construction, indicated only by dotted lines in Fig. l. The base e supports a casing d that is provided with la plurality of perforations or air passages dl. The casing d, at its upper end, supports a hollow east iron shellf.

It will be noted that the partition in the hollow base a is approximately' U-shaped. Vithin the casing d is an upright partition plate d2 that extends from the top to the bottom thereof and that is of the same cross section and alines with the said U-shaped partition a2. The chamber formed within the partition d2 constitutes the combustion chamA ber of the stove, and the lower portion thereof is preferably provided with a protecting lining d3, either of cast iron or fire brick. A door g normally closes a fuel delivery passage that opens through the front portion of the casing d into the combustion chamber. g1 indicates a damper which regulates an air supply passage in the upper front portion of the said casing (l, and gz indicates a small door which normally closes a passage in the front of the casing d, in the vicinity of the grate c.

b1 indicates a draft damper in the front portion of the base casting a.

The burning products of combustion from the chamber within the partition di pass upward into a chamber l of the upper shell thence downward through a vertical llue 2 that extends from said chamber 1 into the compartment 3 of the base e. From the compartment 3 the products of combustion pass upward through a vertical flue 4 into a large segmental chamber 5 of the upper shell f. From the said compartment 5 the products of combustion pass downward through a vertical llue (5 into a compartment 7 of the hollow base e, and from thence they pass upward through a flue S into a compartment 9 of the upper shellf, which compartment 9 is in communication with a smoke pipe 10.

The characters 3 and 7 indicate small doors that open respectively into the compartments 3 and 7 of the base a.

Directly over each llue 2, 4, 6 and 8, the upper shell f is provided in its upper plate with holes that are normally closed by removable lids 11. Also the shell fin its upper plate is provided above its intermediate portion of the large segmental compartment 5 with an opening that is normally closed by a larger lid l2.

The base a is preferably provided with legs 13 for supporting it above the floor. J

With the above arrangement, the products of combustion are required to pass over a very large amount of heating surface before they reach the smoke pipe, so that the maximum amount of heat is obtained from a given amount of coal. In practice, I have found that a stove, constructed as above described, has very high heating efficiency, and by the use thereof a large saving in fuel may be ell'ected. The air heated within the perforated outer shell d 'finds ready escape through the upper perforations (Z1, while the relatively cool air may freely pass into the said shell through the lower perforations.

A stove constructed as above described IOO will beof comparatively small cost, and the parts thereof may be very easily assembled or taken apart.

I/Vhat I claim is:

l. In a stove, the combination with a hollow base divided into compartments and an upper shell also divided into compartments, of a perforated upright casing interposed be tween said base and upper shell and having a partition affording a combustion chamber, which combustion chamber opens into one of the compartments of said upper shell and the other compartment of said upper shell having an outlet passage, and upright flues connecting the compartments of said base and upper shell and causing the products of combustion to travel alternately upward and down ward on the way from said combustion chamber to the said outlet passage of the stove, substantially as described.

2. In a stove, the combination with a hollow base a having compartments (L4-3i? of the perforated shell d connected at its lower end to said base a, and the hollow upper shell f connected to the upper end of said casing d andhaving compartments l, 5 and 9, which latter leads to an outlet passage, the partition cl2 within the said casing d affording a combustion chamber that communicates at its upper end with said chamber l, a flue 2 connecting said chamber l with said chamber 3, a flue 4 connecting said chamber 3 with said chamber 5, a flue 6 connecting said chamber 5 with said chamber 7, and a flue 8 connecting said chamber 7 with said chamber 9, substantially as described.

In testimonyT whereof I affix my signature in presence of two witnesses:

ERIK ELOFSON.

Witnesses:

H. D. KILGORE, MAME IIoEL. 

